The first season [of The Crown] had a much-reported budget of £100 million. To put that into perspective, it works out at about ten times more than the entire series — nine seasons — of my own Foyle’s War.

When S7 ended, Foyle was all smiles after his replacement in the police force finally arrived, allowing him to resign and pursue other interests, including a trip to America to carry out his vow to bring Howard Paige to justice. In 2010 Anthony Horowitz said that he very much hoped the next installment of the show could be shot in America to follow the Paige storyline. That would have been awesome in more ways than one (MK on American soil!), but unfortunately, budget limitations precluded filming in the US.

Hoping for a book from AH someday…

@GeraldKelley I have thought about it and it's just possible that I might.

In the S9 DVD featurette The Truth Behind the Fiction: High Castle, Anthony Horowitz said of this scene:

I wanted to see Foyle in front of a concentration camp. That was the single thought that sparked off the very first episode. It occurred to me that if Foyle was the epitome of good and decency in the period 1940 through to ’46, ’47, then it would be quite interesting to juxtapose him against the symbol of all evil.

Michael doesn’t just perform lines – he argues with me, fights with me, makes my life difficult, but always to make it better. He’s never asked for anything that hasn’t improved the script. He’ll look at five lines and say, “Anthony, I don’t need to say any of those lines. I can just do it with a look…” And it’s so irritating that he’s right.

The photo in the cemetery reminded of this tweet from AH about the last episode of S9. It’s making me think the worst. We know AH wasn’t exactly happy to be writing a ninth series of FW. One sure way of ending his involvement with the show would be to kill off one of the main characters. That sort of plot twist seems to be happening too often for comfort lately.